Anthony G.
Greenwald, PhD

IMPLICIT
ASSOCIATION TEST MATERIALS

Updated July 2, 2012: Contract Services for Academic and Commercial Researchers. PROJECT IMPLICIT is a non-profit organization that has, as the first element of its mission statement, "to develop and deliver methods for investigating and applying phenomena of implicit social cognition". It carries out that mission in part by collecting data in web-administered studies that can draw on a large repertoire of procedures, including ones that obtain latency data and ones that collect survey (self-report) responses. It also makes this infrastructure available to other researchers on a contract basis. Other researchers can use participants from a pool of participants who drop into Project Implicit's web site (implicit.harvard.edu), or that they recruit themselves and send to a private study hosted on Project Implicit servers. Details of these research capabilities are described in a downloadable file, http://www.projectimplicit.net/researchers.html. To learn more, contact services@projectimplicit.net.

The next 3 notes describe revision history of downloadable software found in the 3rd note

Posted 29 Dec 2007:
Laboratory software for the IAT (operates under Windows operating systems)The generic IAT software was updated on 26 Dec 2007 to
correct some variable -naming errors in the SPSS syntax that was posted
26 Aug 07. There is a new pdf file that gives an overview
of computation of alternative forms of the D measure.
Further notes available in links below labeled Read
this. Generic Inquisit syntax for creating IAT scripts
(dated 26 Nov 2005) continues to be available in the Generic
IAT zipfile download (see further description below).

Posted
26 Aug 2007: The generic IAT software was updated on 26 Aug 2007 to
correct a minor error in computation of error-penalty scores (the error
was that latencies greater than 10000 ms were not deleted in the computation
in syntax files dated 26 Nov 05).
These files have subsequently been replaced as described in the posting
for 29 Dec 2007.

-- Use SPSS
(updated 29 Dec 07) to analyze
the resulting data.. Read
this for explanation of data analysis using the SPSS scripts.
The just-updated (26 Nov 05) syntax should be more user friendly
than previous versions of syntax I have provided. It also
corrects a minor error in the previous version's computation of
error-penalty forms of the improved IAT scoring algorithm.

SAS
syntax (as of 10 Aug 05, this
syntax has been updated with a correction for the error-penalty
computational flaw noted above. Thanks to Brian Nosek for
the SAS version of the new scoring algorithm. To use it, remove
the .txt extension before use this with SAS. Note: If this
link is broken, please check Brian
Nosek's website, where this file resides.

New(Feb 9,
2004):Downloadable pdf of slideshow
presented at Jan 2004 meetings of the Attitude Preconference at the
Society of Personality and Social Psychology's annual meeting in Austin,
TX: "Revised Top 10 List of Things Wrong with the IAT." Includes
a list of avoidable procedural errors in using the IAT. Find
it on the unpublished manuscripts
page.